Valve.



F. TUDOR, DECD. V r. TUDon, ADMINISTRATOR.

VALVE.

APPLIGATION FILED MAB. s. 190s.

PATENTBD MAY l0, 1904.

N0 IODEL.

UNITED STATES BEST AVAlLABLE COP".

Patented May 10, 1904.

PATENT OFFICE.

EREDERIC Timon, oE BRooKLINE, MASSACHUSETTS, ADMINISTRATOR or 4EI- iEiDERIc TUDoE, DECEASED.

i VALVE.

` PECIFIVCATION forming part of Letters Patent No. 759,774, dated May 10, 1904.

Improvements in Valves, of which thefollow .ing is specification.'A

Thisfinvention relates" to. Valves generally,

. but .particularly to valves for use in low-pressure steam-heating systems, and the principal .f object 'of the invention is to provide an improved valve forl controlling the ypassage of the heagingagentfrogn thevsupply to the radiator of a heating system and one whose capacity may be varied to adapt it to radiator of different sizes or capacity. In PatentNo. --7 05,981, dated July 31, 1902, there is liiwnfand described a low-pressure steam-heating system embodying a valve of the above character for controlling the passage of the steam from the supply to the radiator, and herein isshown an invention as embodied in a valve of the same type as that shown in the patent aforesaid. It is not, however, considered that this invention is limited to the particular embodiment herein shown and described.

AValves of this type have heretofore been,

operated by means of a cam having a fixed or unchangeablethrow, and consequently the scope of graded and economical steam-delivlery of 'su'ch vvalves has heretofore been limited to radiators having a condensing capacity no greater than the capacity of the valve when vin its fully-open position. ,The capacity of a given valve when in its fully-open position was of course limited to and determined by the extreme throw of r'tl'ie cam."' jTherefo1'c a valve lhavinfg'f'falcam ofa given inch'angeable throw was limited in itsuse tcxra'` -iators having no greater condensinggcapacity than'tliat for which cams'of that particular throw were appropriate. It is also true of valves type that as heretoforeconsti'ufctedrwhen a valve of a given capacity was used with lra-4 diators having a maximum condensing capac.-4

.' ""f'pplcatii iiled March 5, 1903. Serial No. 146,424. .,(No model.)

.the valve proper.

ity less than that for which the fully-open position of the valve was., appropriate the usual index or dial of thatva'lve wouldnot falsely indicate the one-fourth, one-half, threefourths', and fully-open positions of the valve for that particular radiator, for when'- in the` fully-open position according Ito the index the valve wouldhave too great.capacityv for the maximumkcondensingcapacity of tli'e radiator. -Thus in order to provide a fully-ef- 'be appropriate to'tli'at radiator v and would 50 ficient equipment forradiators of miscellaneous sizes it has been necessary to .provide valves with cams graded to suit gradations'in radiator-surfaces, and thus either@ large stock of valve-cams has been reqiliiredor else SPLE- cial construction ofcamsresorted to. lThese features, which are objectionable, are o bviatel 6 5 by the present invention,which is an improve Valve provided with an adjustable valve-operating cam and witlrineans for holding the cam in adjusted position', whereby tliemaximum throw of the cam, and therefore the maximum capacity of the valve, may be varied at will to suit the valvejtothe condensing capacity of the radiatorl with which it is usedand whereby one' and the sameindcx will serve for all adjusted positions of the cam.

In the .preferred form of the invention as herein shownV and described the valve-operating cam is hinged to its support near the point of the cam corresponding to the closed position of the valve and is supported by an adjustable Screw, by means of which the cam is held in adjusted position.

In the accompanying drawings, which illustrate an embodiment of the invention, Figure l is fan elevation: of a Valve embodying the preferred Vform of-tlie invention. Fig. 2'is .a centralllngitudinal sectgn of the valve shown in Fig. 1.1 Fig. SisV ajplanyiew of the carp and ldial detached:- AFigs 4 and 5 show mo r fti'cations.

Hating reference to the drawings, C representsthe casing of the Improved valve, and V The valve-stem V'a extends 'l n MM mi* I URFTSMN eser AvAiLAeLr-L oor*l 759,774 Qa,

through the stiiing-boXmUrto'tneeXterior of make its greatest throw appropriate to the the casing C and at its. outer end has fixed to maximum condensing capacity ot' the radiator it a handle H. Mounted on the stuiiing-box with which it is to be used. rIhis adjustment C2 is a dial F, marked, as usual, to indicate of the throw of the cam K not only adjusts 65 5 shun one-fourth open, one-half open, the capacity of a given valve to radiators of three-fourths open, and open positions different sizes, but as the maximum condensof the valve V by thenregistering therewith ing capacity of radiators varies with the surof a pointer la, on the handle H. Upon the rounding temperature this adjustment pertop face of dial F is provided an annular or mits the valve to be regulated to accord with IO crown-shaped cam K, and against this caniK the temperature surrounding the radiator or a projection on the handle H is held by a .with the general condition or' the weather or spring S, which moves the valve V in one diadvancing seasons. It will also be clear now -rectin, while by rotating the handle H and that this adjustment of the cam K does not causing the proje tion to traverse cam K call for adjustment of dial F or for the sub- 75 li' I5 the valve Vis move th opj'stitution of another dial, but that the same A A posite direction. The annulus which makes dial will serve as a truthful index for all po- Y up theeamK is slitted transversely ofits axis, sitions of the cam K.

so as tov leave afleXible hinge 7a2, con- What is claimed is-F neeting the annulus with the dial, and this 1. The combination of avalve, its stem, and

2O hinge is preferably located near the lowest a stem-operating eam, the stem and cam relapoint of the cam-that is, opposite the point tively movable to actuate the valve, a stationon the dial marked Shut That part of .the ary ycam-support whereon the cam is hinged, annulus below the cam K and slits k is tapped and means for adjusting the cam upon its to receive a capstan-serew c, whose head bears hinge. 8 5 against the under side of and supports the 2. A valve-operating device comprising a cam iK. By means of a suitable tool the eapcam adjustable to vary its throw; a stationary l stan-screw c may be rotated 'to raise and supportv for the cam, a hinge connecting the lower -it in its screw threaded socket, and cam and support; means for adjusting the whenraised or lowered of course the cam K relative positions of the cam and support, and will be swung on its hinge k2, which, as stated, a valve-stem controlled by the cam. is nearthelowest portion of the cam K, and 3. A valve-operating device comprising a as av-'result the part of the cam opposite the cam, a support therefor; a exible connection point marked i on the dial' will be raised or between the cam and support integral with lowered, according to the direction in which both, adjusting means to determine the pitch the capstan-screw cis turned.' In the valve- .of the cam with relation to the support, and cam herein shown the part opposite the word a valve-stem controlled by the cam. Openis given eXtra pitchfor emergency 4. In a valve, the combination with a stem opening ofthe valves for purposes described provided with a shoulder, of a hinged cam in the patent aforesaid. This abrupt pitch is with relation to which the stem lis rotatable, suiiicient for all adjusted positions of the camsaid cam directly engaging the shoulder to annulus. v move the stem endwise when the latter is ro- In Fight is shown another form of the intated relatively to the cam, and means to adventionwherein the annulus which makes up just the cam on its hinge to vary the throw of the hinged cam K is split alongside the web 705, the cam. as at la", so that one end of the split annulus is 5. In a valve, the combination with the fastened to the dial F by the web cr, and the valve-stem, of a cam with relation to which other-free end is supported by the adjustable the stem is rotatable, said cam adapted to capstan-screw a. move the stem endwise when the latter is ro- In Fig. 5 the cam-K is shown as a separate tated relatively to the cam; a support for the I IO plece hinged to the dial F by the pint'le la. cam; a spring-hinge rigidly connected at one The improvedvalve is particularly adapted end to the cam and at its other end to the su pto be used in low-pressure steam-heating sysport, and meansto adjust the cam on the springtems to control 4the passage of the steam from hinge to vary the throw of the eam. the supply to the radiator, and by the im- 6. In a valve, the combination with the 1 I5 provements the capacity of a single valve may stem, ot' a split flexible cam-ring with relation be,v adjusted to suit or be appropriate to radito which the stem is rotatable, said cam-ring ators of almost any condensing or heat-radi adapted to nieve the stem endwise when the ating capacity, as it will now be clear that by latter is rotated relatively to the cam-ring; a means of the capstan-screw la* the cam K may support to which one end of the cam-ring is I 20 be adjusted on its hinge 7a2 or web 765, so as to fastened, and means to bend the eam-ringto increase or diminish the throw of the cam and` vary the throw thereof.

BEST AVAILABLE COF1 759774 3 7. In a valve, the combination with the Signed at Boston, Massachusetts, this 20th IO stem, oi' a split liexible cam-ring with relation clay ot' February, 1903.

to which the stem is rotatable, said cam-rin@ f adapted to move the stem endwise when theJ 1d ,I t i t] FRE? l 5 latter is rotated relatively to the cam-ring; a j mcaadm 0f Le 68 a @of M 6 u u 7 support; a spring-hinge rigidly connected at i one end to the cam-ring and at its other end Witnesses:

to the support, .and means to bend the cam- J. PENNINGTON GARDINER, ring and hinge to vary the throw of the earn. BARBARA L. MACKENZIE. 

